Antiques Roadshow turns 20! PBS' most-watched ongoing series celebrates 20 seasons with a new look, new hidden treasures and more appraisals than ever. Tune in to discover finds from Spokane, Washington; Tucson, Arizona; Little Rock, Arkansas; Charleston, South Carolina; Cleveland, Ohio; and Omaha, Nebraska. - Mondays, beginning January 4, 8:00-9:00 p.m. ET.